Split audio files in equal parts with pydub

pydub_audio_split.py

import os, sys
import pydub
import numpy as np

if(len(sys.argv) != 3):
    print(f"{sys.argv[0]} <audio file> <number of parts>")
    sys.exit(1)

filename = sys.argv[1]
numparts = int(sys.argv[2])
filepath = os.path.abspath(filename)
filebase = os.path.basename(filename)
fileext = filename.split('.')[-1]
nameonly = '_'.join(filebase.split(' ')).split('.')[-2]

track = pydub.AudioSegment.from_file(filename, fileext)
track_Value = np.array(track.get_array_of_samples())

#tlength = track.duration_seconds*1000
tlength = round(track.duration_seconds*1000+1)
ranges = [(i*tlength/numparts, (i+1)*tlength/numparts) for i in range(numparts)]

os.mkdir(nameonly)

num = 0
for x, y in ranges:
    x = int(x)*100
    y = int(y)*100
    new_file=track_Value[x:y]
    song = pydub.AudioSegment(new_file.tobytes(), frame_rate=track.frame_rate*2,sample_width=track.sample_width,channels=1)
    song.export(f'{nameonly}/{nameonly}_{num}.mp3', format="mp3")
    num += 1
    #song.export(str(x) + "-" + str(y) +".mp3", format="mp3")